How to Run upgrade.php in Elgg

Several Elgg users wonder why they cannot see changes they do to their Elgg sites. I tell them to run the upgrade.php, but they do not know how to that. This article will give you a step by a step guide on how to run upgrade.php in Elgg.

When developing a theme or simply making some CSS changes in Elgg, you need to run the script upgrade.php to see those changes in the site. What does this script actually do? It flushes the cache and runs code and database upgrades.